JPS5853239B2 - Lubricating grease filling device for rolling bearings - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a lubricating grease filling device for bearings, and particularly to a lubricating grease filling device for double row bearings.

Conventionally, when filling a double-row deep groove ball bearing with lubricating grease, as shown in FIG. The bearing balls 2 were inserted to the intermediate position and filled with a certain amount of grease sent from the grease pumping device 6 via the grease metering device 5.

However, in this method, the bearing 1 must be placed in an accurately centered position with respect to the position of the nozzle 4;
It is necessary to align the bearing balls 2 and nozzles 2"-4 so that they do not interfere with each other, and in order to insert the nozzle 4 of the filling device 3 between the bearing outer ring and the retainer, the shape of the nozzle is a thin oval pipe. This has disadvantages such as difficulty in manufacturing and maintaining the nozzle.

This invention was developed in view of the above-mentioned conventional drawbacks.
The structure of the present invention will be explained below according to the embodiment shown in FIGS. 2 and 3.

FIG. 2 is a drawing for explaining the overall configuration of the device according to the present invention.

In this drawing, 11 is a double row bearing, 12, 12 are balls, 13 is a grease filling device, 14 is an outer member of the grease filling device 13, 15 is an inner member of the grease filling device 13, 16 is a grease metering device, 11 is a grease pumping device.

The outer member 14 has a through hole 17r connected to the grease pumping device 17 via the grease metering device 16, and a recess 14'' on the lower surface, and the inner diameter end of the bearing outer ring is formed on the outer peripheral edge of the recess. The inner member 15 has a central positioning portion 15' that engages with the inner diameter of the inner ring of the bearing, and the inner member 15 has a central positioning portion 15' that engages with the inner diameter portion of the bearing inner ring. The inner member 15 is fitted into the recess 14'' of the outer member 14, and the two are integrally connected to form a unit.

As a result of their integration, both layered protrusions 14',
An annular nozzle a is formed in the gap between the inner and outer peripheral surfaces of 15''.

This annular nozzle a forms an annular grease spout, and the grease is press-fitted from the bearing end face toward the inside around the entire circumference.

Note that the engagement relationship between the end surfaces of the outer shaft and inner ring of the bearing 11 and the outer member 14 and inner member 15 of the grease filling device 13 is slightly adjusted in preparation for rotation of the bearing when injecting grease. There is a gap, and a sealing seal is taken into consideration in preparation for press-fitting the grease.

FIG. 3 is a drawing showing a specific example of applying the present invention to an automation device.

In the drawing, 51 is a bearing, 52 and 52 are balls, and 53
54 is a grease filling device, 54 is an outer member, 55 is an inner member, 56 is a grease metering device, 57 is a grease pumping device,
58 is an upper cylinder piston, 59 is a lower cylinder piston, 60 is an adjustment collar, 61 is a product input chute, 6
2 is a product discharge chute.

The outer member 54 and the inner member 55 are connected by a connecting member 63.

In the apparatus configured as described above, when the bearing product 51 is transported from the input chute 61 to a predetermined position, the lower cylinder piston 59 descends to fix and position the bearing 51.

In this state, the grease filling device 53 is lowered by the action of the upper cylinder piston 58 to seal the bearing end face, and the nozzle a of the grease filling device 53 slightly enters into the bearing.

Then, the grease pumping device 57 is activated and presses the grease into the bearing 51 via the grease metering device 56.

In the drawing, only one side of the grease filling device 53 is shown, and in the next step, the double row bearing is reversed and grease is filled from the other side using the same device.

Furthermore, a pair of grease filling devices having the same shape may be installed vertically facing each other, and grease may be filled from above and below at the same time.

In the above manner, when the grease filling is completed, the grease filling device 53 rises together with the upper piston 58, the bearing 51 also returns to a predetermined chute height by the action of the lower piston 59, and is carried out of the device by the discharge chute 62.

As explained above, the present invention provides an outer member having a recess, a through hole for supplying grease that communicates with the recess, and an annular protrusion on the outer edge of the recess that fits into the inner diameter end of the outer ring of the bearing. and an annular protrusion that is inserted into the recess of the outer member and has an outer circumferential surface facing the inner circumferential surface of the annular protrusion of the outer member, and furthermore, a convex positioning member that is inserted into the inner diameter portion of the inner ring of the bearing. an inner member having a section, and a connecting member that fixes the inner member and the outer member to form a cavity in the recess of the outer member; The present invention relates to a lubricating grease filling device for a rolling bearing, in which an annular nozzle is configured with a gap formed between the two.

That is, since a certain amount of grease is filled between the ball groove of the stationary or rotating bearing and the cage, the grease enters directly into the ball race surface.

Also, since grease comes out all the way from the ring-shaped groove,
It is not necessary to place the bearing in an accurately centered state as in the conventional case, and there is no need to align the nozzle between the bearing balls.

Furthermore, since no thin-walled nozzle is used, it is possible to extend the life of the mechanical component, improve maintainability, and reduce processing costs compared to conventional mechanisms.

Furthermore, since the positioning section of the inner member performs centering of the bearing placed at approximately a predetermined position, it is even more suitable for automation.

Incidentally, since the above-mentioned effect has been confirmed through experiments, it can be used as a lubricating grease sealant for a machine dedicated to automatic assembly of double-row deep groove ball bearings.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the overall configuration of a conventional grease filling device. FIG. 2 is a drawing showing the overall configuration of a grease filling device according to the present invention. FIG. 3 is a drawing showing an example of the case where the grease filling device according to the present invention is used as a part of an automation device. IL51... Bearing, 12, 12, 52, 52.
... Ball, 13,53 ... Grease filling device, 14.54 ... Outer member, 15,55
...Inner member, 16,56...Grease metering device, 17゜57...Grease pumping device, 141...Recess, a... ...Annular nozzle.

Claims (1)

[Claims] 1. An outer member having a recess and a through hole for supplying grease that communicates with the recess, and an annular protrusion that fits into the inner diameter end of the bearing outer ring on the outer edge of the four parts, and the recess of the outer member. an inner member having an annular protrusion that is inserted into the outer member and has an outer circumferential surface facing the inner circumferential surface of the annular protrusion of the outer member, and further has a convex positioning portion that fits into the inner diameter portion of the inner ring of the bearing; A cavity is formed in the recess of the outer member by the inner member and a connecting member that fixes the outer member, and an annular nozzle is formed in the gap formed between the inner and outer circumferential surfaces of both the layered protrusions of the inner and outer members. A lubricating grease filling device for rolling bearings.